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Torun Centre for Astronomy, Poland. Radio telescope dish antennae at the Torun Centre for Astronomy in Poland. The centre is an optical and radio observatory with two single-dish antenna telescopes, 32 metres and 15 metres in diameter, as well as Poland's largest optical telescope. The observatory is operated by the Nicolaus Copernicus University. Torun is the birthplace of the astronomer Nicolaus Copernicus.